"How inconvenient." Archer's voice is detached--maybe a little annoyed. He glances over Mordin and Shinjiro, taking in their appearances with casual recognition. "I thought I'd go find her on my own, but you guys showed up...I guess I'm stuck with you." He doesn't appear to be armed in any way, but he still shows every sign of intending to head into the strange tower. "You're totally free to avoid 'saving my ass,' though. I won't do you any favors either." He shifts his attention to Mordin as they approach the tower. "I don't know if you'd call me her friend, and I'm not from her world like this kid. But I've had my share of experience with things that could be called 'shadows.'"

He tilts his head back a little to examine the lettering, slowing his steps. "'The ignorant will be saved equally,'" he mutters for Mordin's benefit, just in case Japanese characters weren't something an alien doctor needed to learn. "I don't consider that promising...but we didn't come here for fun."

With a quick, grudging nod to Shinjiro, he starts into the tower, no fear at all on his face.